<template>
    <div>
<!--      面包屑导航区 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
      </el-breadcrumb>
<!--      卡片视图区域 -->
      <el-card class="box-card">
            <el-row :gutter="20">
              <el-col :span="10">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                  <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                </el-input>
              </el-col>
              <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
              </el-col>
            </el-row>
<!--        用户列表区域 -->
        <el-table :data="userlist" border>
          <el-table-column type="index"></el-table-column>
          <el-table-column label="姓名" prop="username"></el-table-column>
          <el-table-column label="邮箱" prop="email"></el-table-column>
          <el-table-column label="电话" prop="mobile"></el-table-column>
          <el-table-column label="角色" prop="role_name"></el-table-column>
          <el-table-column label="状态">
            <template slot-scope="scope">
              <el-switch
                v-model="scope.row.mg_state"
                active-color="#13ce66"
                inactive-color="#DCDEE6"
                @change="userStateChanged(scope.row)">
              </el-switch>
            </template>
          </el-table-column>
          <el-table-column label="操作" width="130px">
            <template  slot-scope="scope">

<!--              修改按钮 -->
              <el-tooltip effect="dark" content="修改用户信息" placement="top">
                <el-button type="primary" icon="el-icon-edit" circle size="mini" @click="showEditDialog(scope.row.id)"></el-button>
              </el-tooltip>
<!--              删除按钮 -->
              <el-tooltip effect="dark" content="删除用户" placement="top">
                <el-button type="danger" icon="el-icon-delete" circle size="mini" @click="removeUserById(scope.row.id)"></el-button>
              </el-tooltip>
<!--              分配角色按钮-->
              <el-tooltip effect="dark" content="分配角色" placement="top">
                <el-button type="warning" icon="el-icon-setting" circle size="mini" @click="setRole(scope.row)"></el-button>
              </el-tooltip>
            </template>
          </el-table-column>
        </el-table>
<!--        页面显示切换区域-->
        <div class="block">
          <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
          </el-pagination>
        </div>
      </el-card>

<!--       添加用户的对话框-->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
<!--        内容主体区域 -->
        <el-form
          :model="addForm"
          :rules="addFormRules"
          ref="addFormRef"
          label-width="70px"
        >
          <el-form-item label="用户名" prop="username">
            <el-input clearable v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input clearable type="password" v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="确认密码" prop="password2">
            <el-input type="password" v-model="addForm.password2" autocomplete="off"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input clearable v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input clearable v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
<!--        底部区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

<!--      修改用户的对话框 -->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="30%"
        @close="editDialogClosed"
      >
        <!--        内容主体区域 -->
        <el-form
          :model="editForm"
          :rules="editFormRules"
          ref="editFormRef"
          label-width="80px"
        >
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" :disabled="true"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email" clearable></el-input>
          </el-form-item>
          <el-form-item label="手机号" prop="mobile">
            <el-input v-model="editForm.mobile" clearable></el-input>
          </el-form-item>
        </el-form>
<!--        底部区域 -->
        <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUser">确 定</el-button>
  </span>
      </el-dialog>

<!--      分配角色的对话框 -->
      <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed"
      >
        <div>
          <p>当前用户： {{userInfo.username}}</p>
          <p>当前角色： {{userInfo.role_name}}</p>
          <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
              </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-foot">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
    </div>
</template>

<script>
export default {
  name: 'Users',
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmain = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmain.test(value)) {
        // 合法的邮箱
        return callback()
      }
      callback(new Error('请输入正确的邮箱'))
    }

    // 验证手机号规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号码的正则表达式
      const regMobile = /^(0|86|17981)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    // 密码二次确认规则
    var checkPassword = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请再次输入密码'))
      } else if (value !== this.addForm.password) {
        callback(new Error('两次输入的密码不一致！'))
      } else {
        callback()
      }
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
        password2: ''
      },
      // 修改用户的表单信息
      editForm: {},
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3到10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 18, message: '密码长度在6到18个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { min: 11, max: 11, message: '请输入正确的手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ],
        password2: [
          {
            validator: checkPassword, trigger: 'blur'
          }
        ]
      },
      // 修改用户的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { min: 11, max: 11, message: '请输入正确的手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变条件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的时间
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关状态的改变
    async userStateChanged(userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        // console.log(res)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败!')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      // console.log(res)
      this.editForm = res.data
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 点击确定按钮，修改用户信息
    editUser() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起用户信息的数据请求
        const { data: res } = await this.$http.put(`users/${this.editForm.id}`, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        this.editDialogVisible = false
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据Id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户信息，是否继续？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 如果用户确认删除，则返回值为字符串 confirm , 如果用户取消删除，则返回值为字符串 cancel
      // console.log(res)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('成功删除')
      this.getUserList()
    },
    // 根据Id分配对应的用户权限
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 在展示对话框之前，获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }

      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听用户权限分配对话框关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }

  }
}
</script>

<style scoped lang="less">
  .el-table{
    margin-top: 20px;
  }
</style>
